Hydraulic transmission apparatus



Nov. 26,1946. J. $.BECKER 2,411,772

. 7 HYDRAULIC TRANSMISSION APPARATUS Original Fi1ed1Nov 23. 1942 H I, I '2.) h

- mmvron.

" j ATTORNEY a umer obiectqzor the'ijyflntidn isto meme -appended claim ior this purpose, L j

' Within the housing application N fig ewi wsmas... ;i...== Y m terboroiv J. I I

, ncorporation): I a

This invention relates to apparatus v and particularly to the establishment andcontrol ;o! a hydraulic type oi drivingconnection orion for transfer oi energy irom a driving member to a member to'be driven.,

Aneobject 'oi' 'the invention is't'o provide .1 novel type of hydraulic transmissioncharacter -n ized.by{th e'- :f'ability of the mechanism to adjust itself automatically to variations in; the condicha manner substantially constant torque output, according'to which is:

preferred many given installation.

a novel ulic transmission of the WP? in eluding a 'zap'airpi iiuid-areceivingfxnembers,rotat able about a conimonaxis-andf'adapted to varying relative positions in response to 'var ia.-- tions in the speed-ioifitheidriving member.

These and other 'objectsi oi the'invention will become apparent ,fromjinspection ot-the follow-"1 ing speciiicationwhen read'with reference tothe bodiment-oi the invention is ill'ustratedn It is accompanying drawing wherein an elected "emll to be expressly understood, however, that the.

drawing is for the purpose of illustration only,

and is'not designed as a definition of the limits of the invention, rei'erence'heing had to the 5,303

Inthedrawing: -Figure 1 is a longitudinal,sectionatviewot;

the invention; I Figure 2 1s a. transverse sectional view takenon f the line 1-2 oi Figural;

In practicing my invention, I as illustrated in the, drawing, I employ ahousing l havingcomplementary sections 5 and 6 provided with reg istrating flanges], and I suitably secured as, 40

indicated at 8, and'iurther provided'with hub portions Ii and i2, respectively, the former bee' .ing iournaled upon a driving shaft-i3, as indie cated at, while the hub I2 is drivably connected by meansof a key 18 to. a driven shait II; the latter being counterbored to form va bear Zing portion I9 to receive the reduced end portion II of the driving shaft l3. 1

. 4 there is provided I i receiving vesselor member 26 rovided with radi ally disposed vanes 28. The housing section 8 is ember 2a. 1942.

Ne 486,640. mum band this amnesia m22,1944 WED-550,651 v p v i'cumi c 00-54) that upon rotation oi 'iior'med in the impeller 28 by the vanes 28' and f thrownyirom said pockets. against the vanes, ll of the rotor '0, thereby causing a rotation of the housingl, thus l0 shaft -l c c c I i dq' oi the unit.

a substantially constant speed-or producing 1:0tation oi the driven 'I'henovel means 'tionofthe driven shaft i1 is maintained subtheir outer and inner ends pivotally mounted in bearings 62 and N, respectively, formed integral engaged by a pair of coiledcompression springs :81. The springs; bear against the walll'oi the housing section andtend to hold theF-vanes in po's'iteiy' vanesdloi the driving impeller 926: but as' the iii-rotation increases-which ."fincreased'speed wouldotherwise createa tendency "ion-a correspondingly increased torque output fluidipre'ssure exertedagainstgthevanes6| will turn the. said vanes about theirv bearings 12 fand "J63 =zthereby producing a greater degree picompression-otthe springs 61; As such turn- 'ing' of the vanes occurs the amount of relative I --rotation or slip, as between the driving impeller '16 and the driven vanes 6|, will increase due 'to the increase in. the. gap between theopposing Y edges of the vanes -28 on the one hand and the now receding edges of the'vanes'Bl on the other. Thisiincrease in slip torque output at the driven shaft i1 is tained substantially constant.

This is aldivision of .my application Serial v Number 466,640fl1ed November 23, 1942. "i 7 I What is claimed-is: c c In a hydraulic transmission. the combination or a fluid tight housing adapted to contain fluid; a driving impellermember rotatably mounted at rotatably mounted at-the other end of said housc c the driving shaft 1w therefore corresponding rotation of i the 1 whereby the-speed oi'rotath the housingsection 0, as illustrated in-Fig-' 1 ure 1. The vanes 6i areoi'an L-shapedconiig-p ,uration'in cross section and eachhas on'e'iace the, relative dispos tionindieated in Figure 1, namely, luv-approximate ali nment with the opat thedriven shaft 'ilthe resulting increase in,

will in turn-reduce the'fluid' Y pressure being exerted upon the vanes 6 I thereby; 1 oijisetting what would'otherwis'e be the tendency; 1 toward; increased torque at the driven shaft", n Thus is-produced an action by reason of iwlilgh, V

one end oi saidhousingya driven rotor member ing and in predetermined spaced relation with respect to said impeller member; and fluid pressure responsive means for varying the space relationship between said members, said means including a plurality of substantially L-shaped vanes arranged in angular spaced relation about the axis of rotation of saiddriven member and pivotally connected at both ends to the latter,

' peller member, the displacement of said inwardly each of said L-shaped vanes having an inwardly extending leg, the end face of which is in parallel spaced relation with the adjacent end face of said impeller member and a laterally extending leg in substantially parallel spaced relation with extending legs being variable to compensate for differences in speeds of rotation of said impeller member without imparting consequent changes "in the speed of rotation of said rotor member. I

JOHN B. BECKER. 

